Avast 4.8 Latest Home&Pro not Starting

Hi all,
I have a very strange and odd problem.
I am doing PC assistance to a friend and his laptop with avast has a very strange behaviour.
(I tried installing both Home & Pro but the problem persists).

Avast is actually installed and running with all services. No virus are detected if i scan with ashEnhcd.exe. I have avast in tray correctly. Everything seems to be OK.

BUT

If i try to run avast from tray (right-click start avast-antivirus) or from start menu (start/programs/avast antivirus/) nothing happens. It should pop up the splash screen to scan the memory and then run the compact avast, but nothing happens and no processes are shown rising/setting in the task manager.

So I came here to ask if someone has this behaviour too or there are any fixes.

(I did try completely wipe/reinstall Avast but no way, the problem is still there).

The system is an XP Pro SP3, Amd Athlon 64 3000+ 1.80 Ghz, 512 Mb Ram.

Any clues/hints? :frowning:

Did you have an Antivirus program on the computer before installing Avast?
Have you removed it?
How did you remove it?

Hi GabryJ84
try to follow these steps
Run msconfig>>startup>>stop [ RAID Event Monitor ] >> Restart
For home PC with one HDD U wont B needing the RAID Event Monitor
Tell me how it worked :wink:
Good luck